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Re: [Healeys] electric radiator fan

To: healeys@autox.team.net
Subject: Re: [Healeys] electric radiator fan
From: Kees Oudesluijs <coudesluijs@chello.nl>
Date: Thu, 24 Jan 2019 18:16:18 +0100
Delivered-to: mharc@autox.team.net
Delivered-to: healeys@autox.team.net
References: <CABXhz88DpqShYzYY6fK5EnyGXf_4bbhPr5XJuTiRTj2ikHHacQ@mail.gmail.com>
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I have always done so with my cars if they had a fixed fan. I just 
removed it and fitted a proper modern multi-blade fan with ring around 
the blades as near the radiator as possible. I have always fitted the 
thermo switch in the top radiator tank or top hose. I used 22mm thread 
for the switch as there are thousnads of variations available. The type 
of switch depends largely on the thermostat you have in the car and the 
pressure  or coolant you have in the cooling system.

E.g. if you have an 86°C thermostat you would need a cutting out temp of 
the thermoswitch of about 92°C. If you run a 7psi cooling system with 
proper coolant you would need a cutting in temp. of around 100°C, the 
lower the pressure the lower the cutting in temp.

You would also need to fit an overflow reservoir and make sure the 
rad.cap is fully airtight.

If you have an 82°C thermostat the cutting out temperatuire can be 
choosen of about 88°C.

Always get the cutting out temp. of the thermoswitch about 5-6°C over 
the opening temp. of the thermostat.

If you fit the thermoswitch in the bottom tank of the radiator the above 
does not apply.


Kees Oudesluijs



Op 24-1-2019 om 17:00 schreef i erbs:
>
> Has anyone run with just an electric fan, removing the engine fan for 
> the radiator? Thinking about running that way with a thermostatic 
> switch for the electric fan, like on modern cars. That way I can mount 
> the fan a pull between the rad and the engine. Comments from 
> experience please.
> Ira Erbs
> Portland,OR
> _______              _______
> (______ \____1959 BN4____/ _______)
> (_________________________)
>           BT7 engine and disk brakes
>
>
> 1967 MGB MG
>
> A racing car is an animal with a thousand adjustments. Mario Andretti
> Please excuse random auto corrects and misspelled words
>
> _______________________________________________
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    <p>I have always done so with my cars if they had a fixed fan. I
      just removed it and fitted a proper modern multi-blade fan with
      ring around the blades as near the radiator as possible. I have
      always fitted the thermo switch in the top radiator tank or top
      hose. I used 22mm thread for the switch as there are thousnads of
      variations available. The type of switch depends largely on the
      thermostat you have in the car and the pressure  or coolant you
      have in the cooling system.</p>
    <p>E.g. if you have an 86°C thermostat you would need a cutting out
      temp of the thermoswitch of about 92°C. If you run a 7psi cooling
      system with proper coolant you would need a cutting in temp. of
      around 100°C, the lower the pressure the lower the cutting in
      temp.</p>
    <p>You would also need to fit an overflow reservoir and make sure
      the rad.cap is fully airtight.</p>
    <p>If you have an 82°C thermostat the cutting out temperatuire can
      be choosen of about 88°C. <br>
    </p>
    <p>Always get the cutting out temp. of the thermoswitch about 5-6°C
      over the opening temp. of the thermostat.</p>
    <p>If you fit the thermoswitch in the bottom tank of the radiator
      the above does not apply.</p>
    <p><br>
    </p>
    <p>Kees Oudesluijs</p>
    <p><br>
    </p>
    <p><br>
    </p>
    <div class="moz-cite-prefix">Op 24-1-2019 om 17:00 schreef i erbs:<br>
    </div>
    <blockquote type="cite"
cite="mid:CABXhz88DpqShYzYY6fK5EnyGXf_4bbhPr5XJuTiRTj2ikHHacQ@mail.gmail.com">
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      <div dir="ltr"><br class="gmail-Apple-interchange-newline">
        <span
style="color:rgb(29,33,41);font-family:Helvetica,Arial,sans-serif;font-size:14px">Has
          anyone run with just an electric fan, removing the engine fan
          for the radiator? Thinking about running that way with a
          thermostatic switch for the electric fan, like on modern cars.
          That way I can mount the fan a pull between the rad and the
          engine. Comments from experience please.</span>  <br
          clear="all">
        <div>
          <div dir="ltr" class="gmail_signature"
            data-smartmail="gmail_signature">
            <div dir="ltr">
              <div>
                <div dir="ltr">
                  <div>
                    <div dir="ltr">
                      <div>
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                          <div>
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                              <div>
                                <div dir="ltr">
                                  <div>
                                    <div dir="ltr">
                                      <div dir="ltr">Ira Erbs
                                        <div>Portland,OR</div>
                                        <div><span
                                            style="font-family:'Times
                                            New Roman',serif">     
                                            _______                   
 
                                                        
 _______</span><br
                                            style="font-family:'Times
                                            New Roman',serif">
                                          <span
                                            style="font-family:'Times
                                            New Roman',serif">    
                                            (______ \____1959 BN4____/
                                            _______)</span><br
                                            style="font-family:'Times
                                            New Roman',serif">
                                          <span
                                            style="font-family:'Times
                                            New Roman',serif">        
                                            
(_________________________)</span></div>
                                        <div>          BT7 engine and
                                          disk brakes</div>
                                        <div><br>
                                        </div>
                                        <div><br>
                                        </div>
                                        <div>1967 MGB  <img
                                            
src="http://www.britishcarspecialists.com/assets/images/MG_emblem.jpg";
                                            alt="MG"
                                            moz-do-not-send="true"></div>
                                        <div><br>
                                        </div>
                                        <div><span
                                            
style="color:rgb(51,51,51);font-family:&quot;Helvetica
Neue&quot;,Helvetica,Arial,sans-serif;font-size:14px">A racing car is an
                                            animal with a thousand
                                            adjustments. Mario 
Andretti</span><br>
                                        </div>
                                        <div>Please excuse random auto
                                          corrects and misspelled words</div>
                                      </div>
                                    </div>
                                  </div>
                                </div>
                              </div>
                            </div>
                          </div>
                        </div>
                      </div>
                    </div>
                  </div>
                </div>
              </div>
            </div>
          </div>
        </div>
      </div>
      <br>
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